<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>windows滑稽</title>
	<link rel="stylesheet" type="text/css" href="index.css">
</head>
<body>
	<div class = "box">
		<div class = "box11"></div>
		<div class = "box12"></div>

		<div class = "box21">
			<div class = "box211"></div>
			</div>
		<div class = "box22">
			<div class = "box211"></div>
		</div>

		<div class = "box31"></div>
		<div class = "box32"></div>
		<div class = "box4"></div>
	</div>
</body>
</html>